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Often you would like to manipulate the format of the data in your applications without having to create calculated fields or change the values directly.  In UI5 this is achieved using a formatter function and similar functionality can be achieved using FAB.

An example of this would be appending a percentage sign on to a value for display purposes. 

Instructions:

1. Add a new Script node to your project if one does not already exist.

2. Create a new formatter function.

   Code Block
   language js
   function myPercentageFormatter(value) { return value + '%'; }

   
   

3. Change the Bound Field property to the following:
   
   path:'/TestValue', formatter:'myPercentageFormatter'
   
   TestValue: Is the name of the field in the root of the data model.
   myPercentageFormatter: Is the name of the formatter function in JavaScript. 

Another example would be displaying negative numbers surrounded by brackets, similar to Excel.

In the example below, the field DMBTR is a Text column in a Table.

Instructions:

1. In the Advanced Property of the field DMBTR, set the binding as:

   text="{path : 'DMBTR',type : 'sap.ui.model.type.Float',formatOptions: { groupingEnabled : true, decimals: 2}, formatter: 'amountFormatter'}

2. In a Script node, create the function 'amountFormatter' as:

function amountFormatter(val) {
	//formats a negative number with brackets (NN.NN)
	if (val !== null) {
	if(parseFloat(val) < 0){
		var newVal = val.replace(/-(?=\d)/,""); //remove minus sign -
		return '(' + newVal + ')';
		}else{
		return val;
		}
	}
}